Binder-head for sewing-machines.



A. RoNKE. BlNnE HEADffsEwlNG MACHINES.

MPucmlow man HB. 24. mi?.- v

Lljos. Patented Aug. 17, 1915.

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saca-naine nonsens, n coereneeion BITDERPHEAD FOB SEV/lill T all whom it may concern BeV it known that I, ALBERT RONTKE, a citizen 'of the United States, residing at Bridgeport, inthe county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Binder- Heads for Sewing-Machines, of which the following is a specification, reference being v had* therein to the accompanyingdrawings.

"This invention relates to improvements in binding attachments for sewing machines,

` and has for its object to provide a binder head capable of adjustment 'tofrneet the -requirements of slight variations in the Width of the binding, and preferably combined with means for giving adjustments to said hinder-head in' the direction of its length at the' will o' the operator during the binding Operation, i

Referring to .the drawings, Figure l is a plan' view oit the improved attachment, to

` getlier with` a. portion of a sewing machine cloth or bed plate, Figs. 2 and 3 front and.

"rear end elevations, respectively, o'flig. l,

' plate, 2 the attaclimenthase-i Fig. et ade-tail view, in perspective, ci? the,

inonnted on said baseLplate and .guided in iusting lever Il, spring Washer loraid-guidev 8 and inclined lits oppositely-directed movements ley' the guide 6, forming part ci said carrier, traciting the gn e'way formed in thelmsen plate 9.-, the braid-guiding member 5 being,

provided at its delivery end rvith a concave aiding Walls, 9, and for a portion of its length with edge ,guiding Walls, as l1i). The carrier l is slidably secured upon the'hase-pla-te '2 by adl2, and screw 13, the latter passing -throngthe slot le formed in said carrier and vbeing threaded into said base-plate, said adinsting lever ,l

acting, through pin l5 secured in said carrier entering tne opening il@ of greater diameter'ishovvn i dotted -lines only, l

1') formed in Vsaid leren-t give adinstme Specification of Lett I line than when Application filed February 24g, t, Serial No. flllg i to the hinder-head "the direction of its length. 4 y

17 represents a hraidguiding' element priv oted by pin yi8 onthe braid-guiding nient. ber o, the forward end of said braidgnid.-

ing element being providedwith inclines, as 19 and edgegnides, as 20, and its opposite end with an adjusting screw 2l Which acts against the'wall 4of lnaidguiding mernber to rock the/elcrnr-rnt l? on the pin i8 in opposition to the resiliency of the vspring 23 Which latter is seated at one end on a step 9A forming a part ot the leraidguiding member 5, its opposite end contacting with an overhanging bracket 25 forming a part of said braid-guiding clement.

In the practical use of lthe hindenhead, supposing it to he combined with the means .tor adjusting itin the direction of its length during the binding operation, the base-plate 2 is secured to the bed-plate so that 'the concave braid-guide 8 Will he in proper rela- .tionship With the line of seam formation when the hinderhead occupies its central position With respect to its longitudinal ad-l justments, To eilect the threading of the binder-head,the braidis passed from the supply through the opening 26 formed in the convex(` Wall 27 of the braid-guiding member 5 and vconcave Wall 28 ofthe braidguiding element 17, and is inverted over the inclines 9, 9, with its folded edge in guiding relationship with the concave braidgnide 8 lin a manner common to binderheads of the present class, when said braid,

.together with 4the 'product being hound, is:

advanced to the action or the stitch-forni` ing mechanism in a manner common to sewing machines generally.

The object of mounting the hinder head adjustable in the direction of its length Without interfering with the stitching operation is to better 'acconnnodate it to the binding oir' products' varying' slightly in thiclmess, itoeing an advantage when hin ing kthe thicker portions to adjust the con cave braid-guide 8 slightly nearer the seam '.nding the thinner portions otfthe'prodnct.

Liter the machine .has been put into op eration, ii it is 'onnd that the braid or bindlnhtly narrower than the capacity derfiiead, the adjns "l inst the .verd or advanced screw 2i is' 24, thus rocking the braid-guiding element 17 on the pivot 18 in a direction to carry its 'the binder-hea d.

ent is z- 1. Ina binder-head of the class described,

To better adapt the binder-head for guiding. the binding from the supply to its delivery end, the braid-guiding member 5 is provided with the edge-guides 10, 10, which are stationary with respect to the axial adjustment of the edge-guides 20, 20; accordingly, when the latter edge-guides are adjusted to accommodate a slight change in the width of the binding, a like adjustment is effected between the edge-guides 10, 10,

land the apex or guiding surface of the bracket 25, it being understood that the con,- vex guiding surfaces arranged in the direction o f the length of the binder-head control its capacity, and that the similarly ar- `ranged concave surface simply acts tohold the binding against accidental displacement with respect to the edge-guides.

INhat I desire to secure by Letters Patthe combination of a guiding member, a guldmg element surrounding and pivotally supported on said member, means for adjusting said member and element relatively n to. each other, and means for maintaining the same relative capacity in the binderhead at thereceiving and delivery ends under all conditions of adjustment.

2. In a binder-head of the class described, the combination of a guiding member, a guiding element surrounding and pivotally supported on said member, means for adjusting said member and element relatively to each other, stationary edge-guides on opposite sides of the receiving en'd of the binder-head and adjustable edge-guides on the opposite sides of the delivery end, for the purpose described. f j

3. In a binder-head for sewing machines, the combination with a braid-guiding mem- -ber provided with a concave braid-guide and edge-guiding Walls, and a braidguiding elethe combination with a braid-guiding mem-y ber provided at 011e end with a concave braid-guide and at its opposite end with a step, and a braid-guiding element pivoted 011 said braid-guiding member and provided at 011e end with edge-guiding walls and at the opposite end with a bracket, of means interposed between ,said step and bracket for giving-to said braid-guiding element axial movements with respect to said braidguiding member.

6. In a binder-head for sewing machines,

the combination with a braid-guiding member provided at one end with a concave braid-guide and at its opposite end with a step, and a braid-guiding element pivoted on said braid-guiding member and provided at one end with edge-guiding walls and at the opposite end with a bracket and an adjusting screw, of means interposed be` tween Said step and bracket for holding said adjusting screwjrin engagement with said braid-guiding member.

7. In a binde'reliead for sewing machines, the combination with a braid-guiding member providednwith a concave braid-guide, and a braid-guidiiig element pivoted on said braid-guiding@"member and provided with edge-guiding walls, of means including a spring acting in opposition to an adjusting screw for effecting relative adjustment of said braid-guiding member and braidguiding element.

In testimony whereof, I have signed my j name to this specification, in the presence of two subscribing witnesses.

ALBERT RONTKE.

llitnesses ABBIE M. DoNiHEE, F. W. CUTHNG. 

